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Engineering a molecular-sieving architecture on poly(ionic liquid)-functionalized UiO-66-NH2 membranes toward CO2/N2
Liangmei Luo1, Yingjie Chang1, Yutong Liao1
1School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China. zhuiqiuzhizhuo@163.com.
Chemical Communications (Cambridge, England)
|May 21, 2025
Summary
A novel membrane combining PIL and UiO-66-NH2 enhances carbon capture. This material achieves high CO2 permeance and selectivity, offering a promising solution for efficient gas separation.
Area of Science:
- Materials Science
- Chemical Engineering
- Environmental Science
Background:
- Efficient carbon capture technologies are crucial for mitigating climate change.
- Developing advanced membrane materials with high selectivity and permeability is essential for effective CO2 separation.
Purpose of the Study:
- To synthesize a novel functionalized membrane for enhanced CO2 capture.
- To investigate the synergistic effects of PIL and UiO-66-NH2 in a composite membrane structure.
Main Methods:
- Photoinduced crosslinking of 1-vinyl-3-butylimidazolium tetrafluoroborate ([VBIM][BF4]) on a PET-supported UiO-66-NH2 membrane.
- Fabrication of a coordination-induced hierarchical architecture.
Main Results:
- The synthesized PET/UiO-66-NH2@PIL membrane exhibited exceptional CO2 permeance of 162 GPU.
- Achieved a high CO2/N2 selectivity of up to 68.3.
- Demonstrated synergistic integration of CO2-philic PIL domains and size-selective UiO-66-NH2 nanocages.
Conclusions:
- The engineered membrane shows significant potential for advanced CO2 separation applications.
- The hierarchical architecture effectively enhances gas separation performance.
- This study presents a promising strategy for designing high-performance membranes for carbon capture.
